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Practice Question

A nurse is preparing to administer cefotaxime 100 mg/kg/day IM divided in equal doses every 6 hr to a school-age child who weighs 50 lb. Available is cefotaxime injection 300 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer Choices:

Correct Answer:

1.9

Rationale:

Formula:

Dose = (Weight in kg × Daily dose/kg) ÷ Doses/day; Volume = Dose ÷ Concentration

Given:

✓ Weight = 50 lb → 22.73 kg

✓ Dose = 100 mg/kg/day ÷ 4 doses

✓ Concentration = 300 mg/mL

Calculation:

✓ Total daily dose = 22.73 × 100 = 2,273 mg

✓ Dose per dose = 2,273 ÷ 4 = 568.25 mg

✓ Volume = 568.25 ÷ 300

👉= 1.9 mL

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This question is from ATI LPN Dose Calculation-PN Nursing Care of Children Proctored Assessment 3.1 which contains 34 questions.

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From Exam
ATI LPN Dose Calculation-PN Nursing Care of Children Proctored Assessment 3.1

34 Questions

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Question Details
  • Category: LPN Nursing Exam(s)
  • Subcategory: LPN ATI Exams
  • Domain: Dosage Calculations
  • Answer Choices: 1
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